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SHEET: 5 OF 7 <br />DATE: <br />DE JOB NO.: <br />DESIGN LOADS <br />Dead Loads Uplift <br />Roof 0.6WL <br />COMP SHINGLE 4.0 psf 0.6WL Zone 1 and 2e -19.9 psf, MIN 10 PSF <br />5/8" Ply shtg 1.9 Overhang -24.9 psf <br />Rf Frm'g 2.8 pWLdown = 8.3 psf 10 psf, MIN 10 PSF <br />Misc. 1.5 Uplift 0.6DL+0.6WL <br />(N) PV System 3.0 Zone 1 0.6*3 -19.9 -18.1 psf <br />Zone 2 0.6*3 -24.9 -23.1 psf <br />Total DL 13.2 psf Downward DL+0.6WL <br />LL 20.0 psf PDL+WL = 13.0 psf <br />SNOW 0.0 psf <br />Rafter Check <br />Existing 2x4 RAFTERS @ 24" o.c <br />Spacing 2.00 ft Trib panel width = 6 ft <br />E 1500000 psi Fb = 900*1.5*1.15 1552.5 psi <br />I 5.4 in^4 MallowWind = 1110 ft-lb <br />Span1 7.33 ft MallowLL = 867 ft-lb <br />Span2 7.33 ft See below for Wind Uplift loads <br />Span3 7.33 ft due to concentated loads at attachments <br />Span4 0.00 ft <br />d <br />(Distance <br />to Att. a b R 1 (lb) R 2 (lb <br />Load <br />(psf) <br />Trib W <br />(ft) <br />P = <br />Wind <br />Uplift <br />Mmax <br />wind(ft- <br />lb) <br />P = <br />Wind <br />Down <br />P = <br />PVDL <br />(lb) <br />-1.50 <br />1 -0.48 -0.48 7.81 432.7 -26.6 24.9 6.0 406.1 -195 163.1 48.9 212.0 <br />2 2.81 2.81 4.52 200.1 124.4 19.9 6.0 324.6 562 163.1 48.9 212.0 <br />3 4.72 4.72 2.61 115.6 209.0 19.9 6.0 324.6 545 163.1 48.9 212.0 <br />4 8.01 0.68 6.65 294.5 30.1 19.9 6.0 324.6 200 163.1 48.9 212.0 <br />8.96 <br />Span 1 Uniform DL 7.33 44.9 44.9 6.1 psf 2.0 12.2 plf 82 <br />Span 2 Uniform DL 7.33 44.9 44.9 6.1 psf 2.0 12.2 82.2 <br />Reactions at Span1 793.3 351.7 Negative values are uplift reactions <br />Reactions at Span2 339.3 75.0 <br />Mmaxwindup =599 ft-lb < 1110 ft-lb OK <br />Mmaxwinddown =662 ft-lb < 1110 ft-lb OK <br />For DL+LL including the PV system weight point loads w = 60.4 plf P = 48.9 lb <br />Mmax =526 ft-lb < 867 ft-lb OK <br />Deflection Check <br />DDL = 5wL4 /(384EI) (5*13.2*7.33^4)*1728 = 0.213 in = L/ 412.4 OK <br />384*1.5E6*5.4 <br />PROJECT: <br />CLIENT: <br />BY: <br />PV Panels for Anthony Lima <br />Solar Max Renewable Energy Provider, In <br />Doug Engineering <br />7/11/2023 <br />SMX-10826 <br />P = DL+WL <br />(lb) <br />1206 W 18th St <br />09/18/23